Home / 1,319,070.20-1,978,605.30-520,086.20

Finding the Fourth Proportional to 1,319,070.20, 1,978,605.30 and 520,086.20

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Solution

The fourth proportional to 1,319,070.20, 1,978,605.30 and 520,086.20 is: 780,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,070.20 : 1,978,605.30 = 520,086.20 : x
  2. Step 2: Convert to fraction form
    1,319,070.20/1,978,605.30 = 520,086.20/x
  3. Step 3: Cross multiply
    1,319,070.20x = 1,978,605.30 × 520,086.20
  4. Step 4: Simplify right side
    1,319,070.20x = 1,029,045,311,776.86
  5. Step 5: Solve for x
    x = 1,029,045,311,776.86/1,319,070.20
  6. Step 6: Final answer
    x = 780,129.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.